Abstract
A method of cutting permanent magnets with circular arcs of offset center was proposed on the basis of the principle of similarity under the condition of slip drive to obtain a permanent magnet transmission scheme for low permanent magnet torque fluctuations. The magnetic flux distribution of each region in the magnetic circuit was altered by changing the shape of the permanent magnet. Different magnetic torque curves were obtained by selecting silicon steel sheet with different thicknesses. The relationship between the magnetic flux distribution and the relative rotation angle in the silicon steel sheet was further analyzed, and the direct cause of the influence of the thickness of the silicon steel sheet on the magnetic torque was obtained. The parameters of different eccentric arcs were selected for simulation calculation, and a smooth magnetic torque curve was obtained after fixing the thickness of the silicon steel sheet. On the basis of the results of the former two, the parameters of the eccentric arc were obtained by the magnetic torque value volatility using an approximation method, and the magnetic torque value was measured by making the physical object. According to the results of the simulation and experiment, the permanent magnets with eccentric arcs can be used to obtain the smooth magnetic torque in the range of a 0°−90° relative rotation angle, which has a certain application value.
Highlights
The magnetic transmission concepts dated back to the early 20th century [1]
If a mechanism can integrate the advantages of permanent magnet and eddy current couplings, it can realize efficient transmission and continuous variable transmission
This study focuses on how to obtain the small fluctuation magnetic torque of the active part and the follower of the magnetic drive within a relative rotation angle of 90 ◦
Summary
The magnetic transmission concepts dated back to the early 20th century [1]. Recently, many studies on permanent magnet transmission have emerged. If a mechanism can integrate the advantages of permanent magnet and eddy current couplings, it can realize efficient transmission and continuous variable transmission. It can widen the range of the permanent magnet transmission application. When the automobile transmission shifts due to the speed ratio change of the transmission, the driving and load speeds are inconsistent, a transition phase to make the driving and load speeds consistent occurs In this transitional phase, if the transmission torque value is reduced and the power is not interrupted, the slip mechanism applies, and the comfort of the occupant improves. The direction and magnitude of the magnetic torque transmitted in the relative angular range are required to be constant to achieve the smooth transmission of the mechanism
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
